With the feet in an athletic stance, bend at the knees and hips to bring 2 dumbbells to approximately knee height. The hips should be back and the shoulders over the hands. Drive with the legs and extend the hips to accelerate the weights upward, and follow through by lifting the elbows as high as possible and to the sides. Let the dumbbells hang directly down from the elbows so they reach upper chest or chin height.